HFSYM, KCN, Xkey, Ykey, Zkey
Indicates the presence of symmetry planes for the computation
of acoustic fields in the near and far field domains (beyond the finite
element region).
KCNCoordinate system reference number. KCN may be 0 (Cartesian), or any previously defined local Cartesian
coordinate system number (>10). Defaults to 0.
XkeyKey for acoustic field boundary condition, as prescribed for the solution, corresponding to the x = constant plane:
None | — | No sound soft or sound hard boundary conditions (default). |
SSB | — | Sound soft boundary (pressure = 0). |
SHB | — | Sound hard boundary (normal velocity = 0). |
YkeyKey for acoustic field boundary condition, as prescribed for the solution, corresponding to the y = constant plane:
None | — | No sound soft or sound hard boundary conditions (default). |
SSB | — | Sound soft boundary (pressure = 0). |
SHB | — | Sound hard boundary (normal velocity = 0). |
ZkeyKey for acoustic field boundary condition, as prescribed for the solution, corresponding to the z = constant plane:
None | — | No sound soft or sound hard boundary conditions (default). |
SSB | — | Sound soft boundary (pressure = 0). |
SHB | — | Sound hard boundary (normal velocity = 0). |
HFSYM uses the image principle to indicate symmetry planes (x, y, or z = constant plane) for acoustic field computations outside the modeled domain. A sound hard boundary condition must be indicated even though it occurs as a natural boundary condition.
No menu paths are available for acoustic applications.